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Questions tagged [fiddler]

Fiddler (aka "Fiddler classic") is a free .net based web debugging proxy for Windows, which allows you to log, examine, modify and replay HTTP/HTTPS traffic from your computer.

The tool shows an overview of HTTP(S) requests and details about the selected request(s) - see the screenshot below.

It allows you to inspect both the request and response, filter data that are (un)interesting, as well as modify (by script or manually) and/or replay chosen requests. The request/response list can be also saved and loaded.

Fiddler Classic has been superseded by the commercial non-free software Fiddler-Everywhere.

Fiddler is also available as a .NET library, FiddlerCore, and as a capture-only FiddlerCap tool (useful, for example, for collecting debug traffic data from customers).

Fiddler Classic is a free-to-use tool; requires MS Windows XP or later and Microsoft .NET Framework v4.0 or later. Download page here

Screenshot

enter image description here

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.Net HttpWebResponse Via HTTPS Response Stream - Works with Fiddler - Garbage Without

I am new to this but so far have been able to find the answers to all of my questions except this one! Pulling my hair out here. The situation is this: A) Getting an httpWebRequest.GetResponse().GetResponseStream() from an HTTPS site (no login,…
Dima
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Fiddler generated certificate has invalid digital signature

Fiddler: v5.0.20182.28034 for .NET 4.6.1 Cert Generator: Tried both CertEnroll & MakeCert Machine: Windows 10 Browser: Chrome I have tried installing fresh fiddler also but no success. I even installed and reinstalled Fiddler Root Cert.
coder
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Fiddler issue logging requests

I think I must have changed a setting somewhere, but fiddler if only logging my gmail notifier and rad.msn.com requests. Any other requests (going to bbc.co.uk for example) are not logged? Any suggestions on what I can do to get these back? I have…
mp3duck
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Capture Azure block blob traffic with fiddler

I have an issue with block blob storage of Azure. The issue is that If I try to access the storage and create a container from a jar, it works fine. If I try to run it from a spark-submit command, it doesn't work. I'am trying to capture the traffic…
mangawy
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Fiddler-like program for OS-internal requests

Fiddler captures HTTP requests and responses so that you can examine them and debug them. What tools are out there that deliver a similar sort of functionality but for OS-internal requests and responses? Specifically I'm looking for a program that…
miara
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How to capture SQL management studio traffic with Fiddler?

By default Fiddler will not capture queries sent from my local Microsoft SQL Server Management Studio. How do I configure Fiddler to capture the traffic? I cannot modify the server, so it must be local changes.
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how to make nginx only redirect requests from sepcific server and pass other requests to their original servers like fiddler?

I am trying to make nginx have two functions like fiddler does: 1、Redirect requests from data.abc.com to 127.0.0.1:9000 2、Pass all other requests to their original servers my nginx.conf is: user nginx; worker_processes auto; error_log…
zhengyu
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HTTP 400 Bad Request on method GET request for WCFService

I am using fiddler to test my web service. It connects to a SQL server database (that is connected and running) The get works on local host and through IIS Express in VS 2017. On IIS, the server works except for the GET request through fiddler.…
inDepth
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How to add the client ip in request header in fiddler

I am using fiddler as a reverse proxy, I want to forward the client ip in the request header so that the server can get it like this: oSession.oRequest["X-Forwarded-For"]=; But I don't know the variable name that I should set, can anyone help me…
zhengyu
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ReleaseHttpClientBase Socket Exception

I am working with the ReleaseHttpClientBase in the Microsoft.VisualStudio.Services.Release package, and I am getting some strange behaviour. So I am calling the GetReleaseDefinitionsAsync on each of my TFS projects, but I get a socket exception from…
Clinton Cochrane
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Monitor packets when using soapUI

I am using SOPAUI to access one of the rest services. I want to monitor the headers that are being sent to one of the downstream application. I tried using fiddler4. That is not solving my purpose. Let me give an example of what i am trying to…
GVR
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Measuring Webpage Size

We have a WPF application created in .Net Framework 3.5 SP1, used for displaying various Web Application. The WPF application uses a Web Browser control to display the web pages of the various applications. We instrument these web pages to measure…
Krishna
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Sending byte array to API

I am converting web application to mobile app. We were using AjaxAsyncFileUpload in web application to save a document to the server, where AjaxAsyncFileUpload use to do the work for me. This was the code Dim fileData As Byte() =new…
Tausif Khan
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Neo4j http Cypher query illegal character '{'

I am attempting to query Neo4j using a cypher query in http. I'm using Fiddler to write and send the request. Here is an example of a very simple query I've attempted. POST http://localhost:7474/db/data/transaction/commit Accept: application/json;…
Ben Richardson
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Fiddler access nested json to modify

i somehow can´t reach the objects in a nested json. I easily can reach the element test, but how to reach this_month inside "stats"? this is my json: {"test":"OK","stats":{"this_month":"1653","this_week":"1653"}} this is my code inside the…
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